A walk through the park:
Wild bergamot flowers emerging
Wild bergamot closeup shows irregular, or not radially symmetrical, flowers
Jerusalem artichoke, an aster, not from Jerusalem and not an artichoke
Jerusalem artichoke closeup reveals tiny disk flowers with five petals
Golden Alexanders
Golden Alexanders closeup reveals flowers with five petals
Saltspray rose
Wood poppy
Button bush
Button bush closeup reveals tubular flowers with four united petals
Scientific names and families:
Wild Bergamot/Monarda fistulata – Mint family/Lamiaceae
Jerusalem artichoke/Helianthus tuberosus – Aster family/Asteraceae
Golden Alexanders/Zizia aurea – Parsley Family/Apiaceae
Saltspray Rose/Rosa rugosa – Rose Family/Rosaceae
Wood Poppy/Stylophorum diphyllum – Poppy Family/Papaveraceae
Button Bush/Cephalanthus occidentals L. – Madder Family/Rubiaceae